Fastener for the meeting-rails of sashes



(No Model.)

Y F. lC. IMMEL. I'ASTBNER FOR THB MEETING RAILS 0F SASES.,.

No. 508,889. Patented Nov. 7,1898.

Rayz

UNITED STATES f PATENT CEEICE.

FREDERICK C. IMMEL, OF SAN FRANCISCO, CALIFORNIA- FASTENER FOR THE NIEETINGl-RAILS OF SASHES.

SPECIFICATION forming part of Letters Patent No. 508,389, dated November 7, 1893. I A

Application filed May 4, 1893. Serial. No. 473,001 (N0 model.)

To a/ZZ whom t may concern:

, Be it known that I, FREDERICK C. IMMEL, a citizen of the United States, residing in the -city and county of San Francisco, State of of thesame.

My invention relates to the class of sash locks or fasteners, audit consists in the novel construction and arrangement of the springcontrolled latch seated upon the meeting rail of the lower sash and adapted to peculiarly engage a keeper on the meeting rail of the upper sash, and the means for withdrawing said latch from its engagement, all of which I shall hereinafter fully describe and specilically claim.

The object of my invention is to provide a simple and effective sash fastener -adapted to automatically lockthe sash in such a manner that it cannot be released from without, but` can be easily disengaged from within.

Referring to the accompanying drawings for a more complete explanation of my invention,-Figure lis a horizontal section through the meeting rails and the case A, showing the fastener in plan. Fig. 2 is a vertical section of same, showing the fastener in side elevation. Fig. 3 is aplan showinga modification' of the means for releasing the latch. A is a casing adapted to be properly secured to the meeting rail W' lof the lower sash. Within this casing is seated a latch B,'the under side of the head of which is beveled after the manner of an ordinary door latch, and projects from the outer face of the meeting rail toward the keeper, hereinafter described, and which is seated on the meeting rail of the upper sash. The head of this latch has in one side a notch b. The stem or shank b of the latch is provided on one side with a straight plane b2 which joins a curved or beveled cam plane b3. These planes work against a stationary anti-friction roller or studC. Fitting behind the head of thelatch is a spring D, serving to hold the latch projected, and `on one side of it is a spring E which serves'to hold the whole latch over to one side.

F is a thumb lever pivoted atfto the inner side of the meeting raii W and having one end connected by a link G with the inner end of the stem or shank b' of the latch B.

v W is the meeting rail of the upper sash. Into the inner face of this is let a keeper plate H having an engaging aperture or socket h to receive the latch, s'aid plate forming on one side the ange h' which receives the engagement of the side notch b of the latch head.

The operation of the fastener is as follows: As the 'meeting rails come together, the head of the latch B, coming in contact with the keeper plate, is forced backwardly against the power of its spring D, until being opposite the engaging recess h, it will spring forwardly into said recess. Up to this time the latch is held over to the other side by the bearing of its straight plane b2 against the fixed stud C, so that the head of the latch is held accurately in line with and is adapted to enter the engaging recess h squarely, but having entered, and the engaging plane b2 having left the stud, which is now engaged by the cam plane b3, the power of the spring E is exerted to force the whole latch over sidewise, whereby the engagement of its side notch b with the flange h of the keeper plate takes place, and the parts are held in this position by the two springs D and E. This completes the fastening, and it will be seen that to release itthe latch must not only be forced backwardly but must be forced sidewise first, a combination of movements which is not likely to be effected from without. To release thelatch, the thu mb lever F is operated,where by through the link G, a pulling tendency inwardly is exerted, the first effect of which is, through the cam plane h3 acting on the fixed stud C, to force the entire latch over'sidewise againstthe spring E, whereby the said notch b is disengaged from the flange h. The straight plane b2 having now reached the stud C, the latch, by the further movement of lever F, is withdrawn straight backwardly from its engagement with the plate, and thus the fas-l teningis released. The provision of the planes b2 and b3, and the fixed roller stud C being for the purpose of effecting the necessary side movement of the latch and its subsequent guiding, it is obvious that these parts may be modified and the same result effected. To illustrate this I have shown in Fig. 3 the latch B as having a chain I attached to the oppo- IOS site side of its head, said chain thence passing over and guided by a fixed pulley J to the inner side where a suitable connection is made with it. It will be seen that by pulling upon this chain so connected and directed, the rst movement will be to pull the latchB over sdewise from its engagement with the flange of the keeper plate, and then to pull it bodily backward.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A sash fastener consisting of a springcontrolled bevel-headed latch seated in the meeting rail of the lower sash, and having a notchin one side of its head, arecessed keeper plate seated in the meeting rail ot the upper sash and having aside flange with which the side notch of the latch head is adapted to engage, and means connected With said latch for pulling it sidewise to disengage its notch from the fiange and thence backwardly to disengage the head from the recessed keeper plate, substantially as herein described.

2. A sash fastener consisting of a bevelheaded latch seated in the meeting rail of the lower sash and having a notch in one side of its head, a spring acting upon the other side of the head to throw the latch over sidewise, anda spring acting behind the head to project the latch, a recessed keeper plate seated in the meeting rail of the upper sash andhaving a llange with which the side notch of the latch head engages, and means connected with said latch for moving it sidewise to disengage its notch from the llange of the keeper plate and then to Withdraw it from said plate, substantially as herein described.

3. A sash fastener, consisting of a spring controlled beveled headed latch seated in the meeting rail of the lower sash and having a notch in one side of its head, and a shank provided with a straight and a cam portion, a recessed keeper plate seated in the meeting rail of the upper sash and having a sideange With which the side notch ot' thelatch head is adapted to engage, a roller in the path of the shank, and a thumb lever on the inner side of the meeting rail and connected with the shank.

In Witnesswhereof l have liel'enntozset my hand.

FREDERICK C. IMMEL.

Witnesses:

S. H. NoURsE, J. A. BAYLnss. 

